A
Does anybody know why must it be 4-20 mA. Is there any technical background behind it? Why
msut it be 4-20..not other ranges? Same goes why is it 3-15psi. Is there a standard for this?
Appreciate some answers. Thanks.
msut it be 4-20..not other ranges? Same goes why is it 3-15psi. Is there a standard for this?
Appreciate some answers. Thanks.